Padlock



(No Model.) 2 Sheets-Sheet 1.

E. T. FRAIM.

PADLOGK.

NO. 582,632. Patented May'18, 1897.

2 Sheets-Sheet '2. E. T. FRAIM. PADLOOK.

(No Model.)

Patented May 18, 1897.

UNITED STATES ATENT FFICE.

EDVARD T. FR-AIM, OF LANCASTER, PENNSYLVANIA.

PADLOCK.

SPECIFICATION forming part of Letters Patent No. 582,632, dated May. 18,1897.

Application filed April 15, 1896. $erial No. 587,688. (No model.)

To all whom it may concern Be it known that I, EDWARD T. FRAIM, acitizen of the United States, residing at Lancaster, in the county ofLancaster, State of Pennsylvania, have invented certain Improvements inPadlocks, of which the following is a specification.

This invention relates to improvements in that class of padlocks inwhich the shackle is engaged in the case bya transversely-sliding bolt;and the objects of my improvements are, first, to produce a cheap,simple, and secure lock wherein the bolt is positively held in a fixedposition when engaged with or disengaged from the shackle, and, second,to produce a keyhole-guard of cheaper construction than those now inuse.

The invention consists in the construction and combination of thevarious parts hereinafter fully described, and then pointed out in theclaims.

In the accompanying drawings, forming a part of this specification,Figure 1 is a perspective view of a lock embodying my improvements,showing the shackle in a locked position; and Fig. 2, a similar Viewshowing the position of the parts when the swinging limb of the shackleis disengaged from the case. Fig. 3 is a perspective inside view of thebody of the lock-case; Fig. 4, a similar inner face view of theclosing-cap; Fig. 5, a ver tical section on broken line 5 5, Fig. 1;Fig.

(3, a similar view on broken line 6 6, Fig. 2;

and Fig. 7, a like view on the said broken lines, the parts being shownin the position occupied thereby when the bolt is raised to bedisengaged from the swinging limb of the shackle. Fig. 8 is a verticalsection on broken line 8 8, Fig. 1. Fig.9 is a perspective view of thelocking-bolt; Fig. 10, a similar view of the keyhole-guard; Fig. 11, atop view of the lower end of the body of the case, showing thekeyhole-guard in place; Fig. 12, a face view of the key; and Fig. 13, avertical transverse section of the case, showing a modification in theconstruction of the bolt.

In this look the case is centrally divided parallel with the front andback plates thereof, and for the purposes of this specification thesection of the case containing the shoulder preventinglongitudinalmovement of the bolt is termed the body of the case and the othersection the closing-cap.

Referring to the details of the drawings, A indicates the body of thecase, comprising the back plate a, side walls a, bottom wall a and topwall (L This portion of the case is provided with the usual rivet-pinsa", a and a, whereby the closing-cap, to be described, is secured to thebody of the case.

B is the shackle, having its fast limb B pivoted on the base ofrivet-pin 0. The swinging limb B of the shackle has a tongue or reducedend I) thereon, adapted to enter an aperture Z) in top wall a of thecase, and in one side of tongue I) is a notch b constructed to beengaged by a tongue on the locking-bolt to be described.

A indicates the closing-cap, having a front plate a and walls a, a and asimilar to and constructed to register with the walls of the body of thecase.

D D are registering partitions located in both sections of the caseparallel with top wall a leaving a channel cl between said partitionsand wall, and in the meeting edges of the parts of partitions D D aresemicircular recesses d, having wings d which when said edges are unitedform a key-opening for a flat key K, recesses a also being formed in themeeting edges of the parts of top wall at opposite key-opening d (1 thatform a seat for the heel K of key K. On the back plate a is a shoulder01 in line with channel I and adjacent to the base of rivet-pin 0.

E represents a sliding bolt having a tongue E thereon, constructed toengage notch b of the shackle. Tongue E forms a shoulder c on the top orouter face of bolt E, constructed to engage a groove (2, located in topwall a and opening into aperture 1) of said wall, whereby the retractionof the bolt is limited. This tongue also forms a shoulder e on the backof the bolt, constructed to engage a rib a on back plate a and extendingacross the end of channel d adjacent to aperture 1), so that themovement of the bolt to engage the notch in the shackle may be limitedto prevent undue pressure on tongue I). Through the bolt is an opening Eoval in general outline and havinga lip 6 in its upperperiphery.

The front of the bolt is of a depth to fit snugly between the front andback plates of the case, and from the front the bolt tapers to the backor rear end, whereby that end may be raised to travel over shoulder (1the shoulder e constituting a fulcrum about which the rear end of thebolt vibrates, as will be explained.

If desirable, the bolt may be made of uniform depth throughout itslength and bearing-lugs (1" (Z be constructed, respectively, on thefront plate a and the back plate a to guide the bolt in its movement andto form a fulcrum for its forward end, as shown in Fig. 13, or saidforward end maybe fulerumed in any other desirable manner, but I preferthat first described.

The outer or front corner of the back or rear end of the bolt is cutaway, so as to form a horizontal bearin g f and a vertical bearingf,engaged by an arm F of a spring F. This spring is coiled around a stud Fon back plate a, and the arm F thereof bears against the base of theadjacent rivet-pin a. Arm F of this spring has an upward or outwardcurve] therein, as shown in Fig. 8, to increase its downward pressure onhearing Rivet-pin a is set in from the adjacent side wall a and isconnected with said wall by a partition g, having therein a notch g,this partition and notch being located to register with a similarpartition and notch g and g, respectively, in the closing-cap, and onthe back and front plates, respectively, are ribs connecting the centersof partitions g with the middle of the side walls of aperture 11,through which the tongue of the swinging limb of the shackle engages thelock-ease. The base of rivet-pin a also has an inwardlyextendedprojection to that forms a support for the front plate when said pin ais being riveted over.

Through the opening formed in united partitions g by notches g therepasses the stem 72 of a plunger, having a head II, adapted to engagebet-ween tongue E of bolt E and the adjacent side wall a of the case toclose aperture b. In the opposite bearing sides of head II are grooves7L3, that receive or take over ribs and guide said head in its movement.On stem 71, behind partition 9, is a boss 7L, and around the extremity7L2 of said stem is coiled a spring S, the free end whereof rests in arecess S in bottom wall a".

In operating, the swinging limb of the shackle being locked in the case,the key is inserted in the lock until heel K thereof enters its seat ain top wall a" and the forward portion K of the bit of said key engageskey-opening E of bolt E. As the key is turned, as shown by the arrow inFig. '7, bit K engages the curved upper wall of key-opening E and raisesthe rear end of bolt E until the same is lifted above shoulder (Z atwhich time said bit contacts with lip c of the bolt and forces said boltback against the tension of spring-arm F until shoulder c on the top ofthe bolt bears against the shoulder formed bygroove 6. At the same timetongue E of said bolt is withdrawn from notch of the swinging limb ofthe shackle, when plunger-head lI, acting under the impulse of spring S,ejects said swinging limb of the shackle from the case and is interposedbetween the bolt-tongue E and the adjacent side wall of the case. Inagain locking the shackle in the case the swinginglimb is closed down,tongue I) pushing in the plunger-head and clearing the tongue on thebelt, which is again engaged with said limb under the tension ofspring-arm F, that not only urges the bolt forward, but also forces therear end thereof into engagement with shoulder d.

Rivet-pins (0 are located adjacent to bottom wall a on opposite sides ofthe keyhole, and parallel with said wall, on both the front and backplates of the case, are formed oppositely-located concave-edged ribs 1,the ends whereof are connected with said bottom plate, the sockets Zbetween said ribs Z and the bottom plate having annularly-shaped bottomsthat form bearings for an annular keyholeguard M, having therein a sloton, that extends through a cylindrical boss on on the outer facethereof. Boss m engages the central annular portion of the keyhole inthe bottom wall of the case, said central portion of the keyhole havingthe usual wings, and when the keyhole-guard is in its normal positionthe slot therein and in boss m registers with win g-openings n1lleretofore these keyhole guardplates have been made with a cylindricalboss on each side. My keyhole guard-plate only has one on the outerface. The advantage in this construction is that the plate can be castwithout the use of a core, thus lessening the cost of production.

In addition to the projections on front plate a heretofore describedthere is a rib N on said plate, located between partition I) and thekeyhole, that serves as a ward for the key and has a notch 11 therein toreceive the portion of the stem of said key connecting the adjacentportions of the bit thereof. There is also a stud N on the front plate,which engages and holds in position arm F of spring F.

The key used with this lock is flat, as shown, but I do not limit myselfto the use of a key of that shape, as any key that can be adapted to thelock may be employed; neither do I restrict myself to the other detailsof the construction herein shown and described, as it is obvious thatmany changes may be made therein without departing from the principleand scope of my invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

l. The combination, in a lock, of a wall of the case, having a recess orgroove therein, a partition parallel with said wall, a rib across theforward end of the channel between said wall of the case and saidpartition, a bolt in said channel, and a tongue on the forward end ofthe bolt and forming a shoulder on each of two sides thereof, one ofsaid shoulders engaging said recess or groove in the wall of the caseand the other shoulder engaging said rib, substantially as and for thepurpose specified.

2. The combination, in a lock, of a wall of the case, having a recess orgroove therein, a partition parallel with said Wall, a shoulder in thecase at the rear end of the channel between said wall of the case andthe partition, a bolt in the channel, having a shoulder adapted toengage the shoulder at the rear end of said channel, a tongue on theforward end of the bolt and forming a shoulder on the face thereofadjacent to said wall, said shoulder adjacent to the wall engaging therecess or groove therein, and a spring having a downward and forwardpressure on the rear end of the bolt, substantially as and for thepurpose specified.

3. The combination, in a lock, of a wall of the case, having a recess orgroove therein, a partition parallel with said wall, a shoulder in thecase at the rear end of the channel between said wall of the case andthe partition, a rib across the forward end of said channel, a bolt inthe channel, having a shoulder adapted to engage the shoulder in therear end of said channel, a tongue on the forward end of the bolt andforming a shoulder on each of two sides thereof, one of said shouldersengaging said recess or groove in the wall of the case and the othershoulder engaging said rib, and a spring having a clownward and forwardpressure on the rear end of the bolt, substantially as and for thepurpose specified.

4. The combination, in a lock, of a shoulder in the case, a bolt havingan opening therein with a curved wall, a lip projecting from said wall,a shoulder on the rear end of the bolt constructed to take against theshoulder in the case, and a key having a bit adapted to engage the saidcurved wall and raise the rear end of the bolt and then to contact withsaid lip and retract the bolt.

5. The combination, in a lock, of a partition located below the top wallof the case and having a key-opening therein, a bolt in the channelbetween said top wall and the partition and having an opening thereinwith a curved wall, a lip projecting from said curved wall, a fulcrumfor the front end of the bolt, a shoulder on the rear end of the bolttaking against a shoulder in the case, a tongue on the bolt constructedto engage the swinging limb of the shackle, a plunger-head adapted toplay in line with the end of the swinging limb of the shackle andinterpose between the tongue of the bolt and the side wall of the case,and a key having a bit constructed to engage the curved wall of the boltand disengage the shoulder thereon from the shoulder in the case andthen to contact with said lip and retract the bolt, substantially as andfor the purpose specified.

G. The combination, in a lock, of a partition located below the top wallof the case and having a key-opening therein, a bolt in the channelbetween said top wall and the partition and having an opening thereinwith a curved wall, a lip projecting from said curved wall, a fulcrumfor the front end of the bolt, a shoulder on the rear end of the bolttaking against a shoulder in the case, the bolt having a recess in itsrear end, a spring engaging said recess and bearing downward and forwardthereon, and a key having a bit constructed to engage the curved wall ofthe bolt and disengage the shoulder thereon from the shoulder in thecase and then to contact with said lip and retract the bolt,substantially as and for the purpose specified.

7. The combination, in a lock, of a partition located below the top wallof the case and having a key-opening therein, a bolt in the channelbetween said top wall and the partition and having an opening thereinwith a curved wall, a lip projecting from said curved wall, a fulcrumfor the front end of the bolt, a shoulder on the rear end of the bolttaking against a shoulder in the case, a shoulder on the bolt engaging arecess in the top wall of the case, to limit the backward movement ofthe bolt, the bolt having a recess in its rear end, a spring engagingsaid recess in the bolt and bearing downward and forward thereon, and akey having a bit constructed to engage the curved wall of the bolt anddisengage the shoulder thereon from the shoulder in the case and then tocontact with said lip and retract the bolt, substantially as and for thepurpose specified.

8. The combination, in a lock, of a partition located below the top wallof the case and having a key-opening therein, a bolt in the channelbetween said top Wall and the partition and having an opening thereinwith a curved wall, a lip projecting from said curved wall, a fulcrumfor the front end of the bolt, a shoulder on the rear end of the bolttaking against a shoulder in the case, a shoulder on the bolt engaging arecess in the top wall of the case, to limit the backward movement ofthe bolt, the bolt having a recess in its rear end, a spring engagingsaid recess in the bolt and bearing downward and forward thereon, atongue on the bolt constructed to engage the swinging limb of theshackle, a springactuated plunger-head playing in line with the end ofthe swinging limb of the shackle and adapted to interpose between thetongue of the bolt and the side wall of the case, and a key having a bitconstructed to engage the curved wall of the bolt and disengage theshoulder thereon from the shoulder in the case and then to contact withsaid lip and retract the bolt, substantially as and for the purposespecified.

9. The combination, in a lock, of a partition located below the top wallof the case and having a key-opening therein, a bolt fulcrumed on itsforward end and tapering toward its rear end, the bolt sliding in thechannel between said top wall and the partition and having an openingtherein with aeurved wall, a lip projecting from said curved wall, atongue on the forward end of the bolt constructed to engage the swinginglimb of the shackle and forming a shoulder engaging a recess in the topwall of the case, to limit the backward movement of the bolt, a shoulderon the rear end of the bolt taking against a shoulder in the ease, thebolt having a recess in its rear end, a spring engaging said recess inthe bolt and bearing downward and forward thereon, a rib across theforward end of said channel and limiting the forward

